133245225 has 36 divisors (see below), whose sum is σ = 240587776. Its totient is φ = 70489440.

The previous prime is 133245199. The next prime is 133245239. The reversal of 133245225 is 522542331.

It is a happy number.

133245225 is a `hidden beast` number, since 133 + 2 + 4 + 522 + 5 = 666.

It is not a de Polignac number, because 133245225 - 2¹³ = 133237033 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 26244 + ... + 30906.

Almost surely, 2^133245225 is an apocalyptic number.

133245225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

133245225 is a deficient number, since it is larger than the sum of its proper divisors (107342551).

133245225 is a wasteful number, since it uses less digits than its factorization.

133245225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4806 (or 4798 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 133245225 is about 11543.1895505532. The cubic root of 133245225 is about 510.7603997213.

Adding to 133245225 its reverse (522542331), we get a palindrome (655787556).

The spelling of 133245225 in words is "one hundred thirty-three million, two hundred forty-five thousand, two hundred twenty-five".